John Stamos Pulls 'Full House' Sneak Attack [TMZ TV]

3/9/2015 6:00 PM PDT

John Stamos -- Pulls Off 'Full House' Sneak Attack (TMZ TV)

TMZ TV

John Stamos returned to the “Full House” house in San Francisco ... and posed for a pic with a bunch of fans! Awesome, right?

Not really ... since the fans were totally oblivious Stamos had slipped in behind them -- and then he bragged on social media about tricking them!